Preheat oven to 350°F (175°C) and grease a 9x13 inch baking pan.
In a large bowl, mix together the cake mix, eggs, and vegetable oil until a thick dough forms.
Fold in the sprinkles, white chocolate chips, and half of the chopped chocolate eggs.
Press the dough evenly into the bottom of the prepared baking pan.
Top with the remaining chopped chocolate eggs, pressing them slightly into the dough.
Bake for 22 to 25 minutes or until the edges are lightly golden and the center is set.
Cool completely in the pan for at least 1 hour before cutting into 24 square bars.